QUAY COUNTY
RED PEAK
APACHE CANYON
REDONDA FORMATION
APACHEAN
RHAETIAN
LATE NORIAN STAGE
LATE TRIASSIC EPOCH
LATE LATE TRIASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: PSEUDOSUCHIA ZITTEL 1887-1890
GRANDORDER: RAUISUCHIFORMES PARRISH, 1993
ORDER: AETOSAURIA NICHOLSON & LYDEKKER, 1889
Family: STAGONOLEPIDIDAE Lydekker, 1887
Subfamily: DESMATOSUCHINAE Huene, 1942
Typothorax coccinarum
Typothorax sp